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Finding the Fourth Proportional to 7,841.90, 11,791.65 and 6,574.70

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Solution

The fourth proportional to 7,841.90, 11,791.65 and 6,574.70 is: 9,886.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,841.90 : 11,791.65 = 6,574.70 : x
  2. Step 2: Convert to fraction form
    7,841.90/11,791.65 = 6,574.70/x
  3. Step 3: Cross multiply
    7,841.90x = 11,791.65 × 6,574.70
  4. Step 4: Simplify right side
    7,841.90x = 77,526,561.26
  5. Step 5: Solve for x
    x = 77,526,561.26/7,841.90
  6. Step 6: Final answer
    x = 9,886.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.